Vison 2: fluid system of the eye

Question 1

Definition of Aqueous humour

Answer 1

Clear, Basic fluid filling anterior and posterior chambers of the eye (in front of Lens), continuously formed and drained

Question 2

enumerate functions of Aqueous Humour

Answer 2

1. Maintain intraocular Pressure (IOP)
2. Supply Nutrients and oxygen to cornea and lens
3. It is 1 of the optical media of the eye
4. Drains metabolites from the area

Question 3

Describe formation of Aqueous Humour

Answer 3

1. Active Transportation of Na+ from cillary body to Posterior chamber by Na+ K+ pump
2. This cause passive movement of Negative ions into Posterior chamber as well (Cl-, HCO3-)
3. Carbonic Anhydrase helps secretion of HCO3-
4. As a result, this causes osmosis of water into Posterior chamber from blood, Along with Active transporation of Glucose and Amino Acids
5. It diffuses into anterior chamber by passing through pupil

Question 4

Describe Drainage of Aqueous Humour

Answer 4

1. At Irido-corneal Angle, exists Meshwork of trabeculae, where Aqueous humour passes through it
2. Then through** canal of Schlem**
3. Then into Episcleral Vein

Question 5

Describe the Vitrous Humour

Answer 5

• Transparent
• contains Hyaluronic acid & Albumin for viscousity
• Supplies retina with glucose